Actually my sister had this a few months back...it took her a long while to get over it and she's almost 40. But it took awhile for her to go to the Dr and then awhile for them to diagnose it. But she said above all go as often to the Dr as you feel necessary its quite serious and they can do wonders...if your little one has to go to the hospital don't think of it as bad as she'll be with Dr and nurses 24/7 for even the smallest things she needs just in case. My sister said take her with the fever bc it could be getting worse...